To Row Echelon Form (Part 2) Perform the indicated row operation:

7

R3+3R2 R3

2

-1

-1

2

-4

1

-1

2 -1 -4

-1 2 1

3 4 5

DONE

-1

5

The sum of the product of 4 and x and the product of 7 and y is 61. the sum of the product of 12 and x and the product of 21 and y is 61. what are the values of x and y?

Barbara deposited $300 in the bank. if the bank pays her simple interest at the rate of 4 percent per year, how much money will she have in her account at the end of 9 months?

Brainliest ! which of the coordinates are not of th vertices of the feasible region for the system of inequalities y≤4,,x≤5,x+y> 6 a(2,4) b(0,6) c(5,4) d(5,1)